Normal stretching property and eletrical conductivity of 7475 aluminum alloy under the conditions of double aging and regression re-aging(RRA) are measured.

• 测定了7475铝合金双级时效及回归再时效(RRA)工艺状态下的常规拉伸性能和电导率,并通过标准三点弯和圆周切口圆柱试验测定各时效工艺的断裂韧性。